title: An in vitro stereomicroscopic comparative evaluation of a combination of apex locator and endodontic motor with an integrated endodontic motor.
abstract: OBJECTIVE
  To compare the efficacy of an integrated apex locator and an apex locator and endodontic motor assembly in maintaining the working length when operated under autoreverse mode.
  
  
  METHODS
  Thirty distobuccal roots of intact maxillary first molars were taken and access cavities were prepared. The teeth were divided into Group I: Prepared with TCM Endo V and Group II: Prepared with ProPex and NSK assembly. The instrumentation was ended in ProTaper F3 file, which was cemented in the canal. The roots were sectioned, observed under a stereomicroscope and the distance from instrument tip to the apical foramen was measured.
  
  
  RESULTS
  Mean difference in the deviation of two groups was 0.075 mm, P = 0.34 (>0.05) which was statistically insignificant when assessed with unpaired t-test.
  
  
  CONCLUSIONS
  The assembly of ProPex-NSK Endo-mate DT and the apex locating endomotor TCM Endo V Nouvag are clinically acceptable.
authors.affiliation: Department of Conservative Dentistry and Endodontics, Gitam Dental College and Hospital, Visakhapatnam, Andhra Pradesh, India.
authors.forename: Ch
authors.initials: Ch
authors.lastname: Swarupa
authors.forename: Girija S
authors.initials: GS
authors.lastname: Sajjan
authors.forename: Yv
authors.initials: Y
authors.lastname: Sashi Kanth
keywords: Endodontic motor; ProPex apex locator; TCM Endo V Nouvag endodontic motor; stereomicroscope